Like with __________ scientists aren’t really sure

what energy is.

• gravity

• motion

• water

• solids

But they know what energy does.

It makes things ________.

• smile

• lighter

• harder

• move

Energy creates a __________.

• house

• atom

• force

• rock

By a force we mean a push or a _______.

• solid

• fall

• chemical

• pull

All matter (visible things) are affected by energy

whether stopped or ____________.

• still

• gas

• heat

• moving

Energy is seen at work in _______ different ways.

• 3

• 5

• 7

• 6

Energy works through machines called ___________ energy.

• mechanical

• heat

• fast

• old

Through wires called _________________ energy.

• mechanical

• electrical

• solid

• fire

Through molecules called __________ energy.

• hot

• fast

• electrical

• heat

Through chemicals called _________ energy.

• laboratory

• rust

• wave

• chemical